#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
void swap(int * x, int * y)

{
	int t ;
	t = *x;
	*x = *y;
	*y = t;
	
}
int main()

{
	int a = 0;
	int b = 10;
	
	swap(&a,&b);
	printf("%d %d", a, b);
	return 0;
}